I have a 65 YGS1. The bike is wired for indicator lights and I'm trying to find a set of lights that will fit in the factory install locations. According to the install images on Partzilla, it looks like the indicator lights replace the bolts that hold the headlamp on. This is particularly useful to hide the indicator wires. I found some indicator lights on Amazon but they have an M10 thread that is too big for M8 nut that is welded in the light bucket.

Wondering if someone knew of a set of indicator lights that had an M8 bolt that would work on this bike.




 

Just to close this out, I wound up buying these. They have M8 hardware and are single wire light which work well with this bike. I had to replace the bulb with a 6V bulb but otherwise they are fine.

www.mikesxs.net/yamaha-xs650-73-84-short...em-533-83340-40.html

Looks great!  Nice job!